Hi Phillipa, this is an area I'm increasingly beng involved in - any chance of more details about some of the more pertinent questions asked, or the overal views of the panel on certain subjects? One question we're currently asking involves what is a better use of limited funds. Gor example the large retro fitting project you make reference to. Assuming that costs £30k for example, is that a better use of £30k than to put in 6 x solar hot water systems? There could be greater overall savings in the short term with the "scattergun" approac of little on many properties rather than large amounts on few.